HackingProfessional ServicesProfessional ServicesStolen CredentialsTargetedCustomer Data InvolvedIdentity (basic)Government IDFinancialMediumContained

ADP

bd_507576f884070fb1 · schema v1 · pii pii-v1

Severity

Medium

Discovered

Feb 10, 2020

Filed

Feb 21, 2020

To disclose

11 days

Affected

16state residents only

Linked

5 filings

Confidence

66%

ADP notified the NH Attorney General on Feb 21, 2020, of a breach affecting 16 NH residents. Unauthorized users accessed client accounts using stolen credentials between Jan 24 and Feb 11, 2020. Exposed data included names, SSNs, and wage info. ADP reset passwords, engaged law enforcement/IRS, and offered credit monitoring.

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Incident timeline

undetected · 17 days

discovery → filing · 11 days

Jan 24, 2020

Begins

Feb 10, 2020

Discovered

Feb 21, 2020

Filed

vs. sector median

16 wks faster

This filing is one of 5 about the same incident.View merged incident

Linked disclosures

Why this link?

Regulatory filings (4) · sorted by filing gap

South Carolina State AGbd_f858bde2a26681382020-02-20 · +1dVerified
Montana State AGbd_0b42389df0393bfa2020-02-19 · +2dCandidate
Massachusetts State AGbd_e7c4f084936463942020-02-19 · +2dVerified
Indiana State AGbd_88d532d4c7eba3642020-02-18 · +3dVerified

Name: ADP
norm: adp
Domain: adp.com

Name: ADP
norm: adp
Domain: adp.com
Industry: Professional Servicesllm

Discovered: Feb 10, 2020
Breach occurred: Jan 24, 2020 – Feb 11, 2020
Undetected for: 17 daysoccurrence → discovery
Materiality determined: —
Notification sent: Feb 20, 2020
Affected individuals: 16state-resident count only
Data types: Identity (basic)Government IDFinancial
Data elements: Social Security number
Attack vector: Unauthorized Access
MITRE ATT&CK: T1078 Valid AccountsT1114 Email Collection
Threat actor: ExternalFinancial
Regulator citations: Reported the incident to the Internal Revenue Service (IRS)
Initial access: valid_credentials

During the incident: Reset all user passwords that were known to be or potentially compromised
Continued to engage with external partners, including law enforcement and the IRS to help prevent further use of any compromised information
Implemented further verification tools to validate authentication of credentials for ADP's client account and help prevent further testing and/or use of compromised credentials
Changes made: Implemented further verification tools to validate authentication of credentials for ADP's client account and help prevent further testing and/or use of compromised credentials
Source: Quoted from the filing itself, not independently verified.

Time to disclose: 11 days(11 days from discovery to filing)
Compliance flags: — (clock not assessable for this source)

Status: No extraction artifact recorded for this disclosure.

Filing propagation · 5 filings · 5 states

View merged incident ↗

Indiana State AGFeb 18 · first

Montana State AG+1d

Massachusetts State AG+1d

South Carolina State AG+2d

New Hampshire State AG+3d · this page

Evidence ladder

Leak-site claim

Attacker assertion only. Establishes: claim date, group, alleged victim.

Press / market report

Unlocks: incident narrative, operational impact. Still no compliance clock.

State AG / regulator filingThis record

Unlocks: discovery date, data types, affected count, compliance clock.

SEC 8-K / victim statement

Unlocks: materiality, stated response, full audit trail. Ceiling removed.

Source URL: https://mm.nh.gov/files/uploads/doj/remote-docs/adp-20200221.pdf
DisclosureLens links to the originating regulator URL — full filing bodies are not redistributed from public surfaces (§4.5).
Filed at: Feb 21, 2020
Raw hash: 34cb8b474a437e92a5702f35e2bb2ef3082f203065efddd20692890542a6d3b9

Linked disclosures

Regulatory filings (4) · sorted by filing gap

Reporting entityADP

Victim entityADP

Incidentdiscovered Feb 10, 2020

Stated responseReset all user passwords that were known to be or potentially compromised

Complianceclock not assessable

Extraction provenanceno artifact recorded

Source provenancemm.nh.gov